Switch to codecov.io for code coverage

.travis.yml

@@ -5,12 +5,11 @@ compiler:
 before_install:
     - sudo apt-get update -qq
     - sudo apt-get install -qq fglrx=2:8.960-0ubuntu1 opencl-headers libboost-chrono1.48-dev libboost-date-time1.48-dev libboost-filesystem1.48-dev libboost-system1.48-dev libboost-thread1.48-dev libboost-program-options1.48-dev libboost-test1.48-dev python-yaml lcov
-    - gem install coveralls-lcov
 script:
     - mkdir -p build && cd build
     - cmake -DTEST_COVERAGE=ON ..
     - make && ./examples/devlist && ctest --output-on-failure
 after_success:
     - lcov --directory tests --base-directory ../vexcl --capture --output-file coverage.info
     - lcov --remove coverage.info '/usr*' '*/cl.hpp' -o coverage.info
-    - cd .. && coveralls-lcov build/coverage.info
+    - bash <(curl -s https://codecov.io/bash)

README.md

@@ -1,7 +1,7 @@
 # VexCL
 
 [<img src="https://travis-ci.org/ddemidov/vexcl.svg?branch=master" alt="Build Status" />](https://travis-ci.org/ddemidov/vexcl)
-[<img src="https://coveralls.io/repos/ddemidov/vexcl/badge.svg?branch=master" alt="Coverage Status" />](https://coveralls.io/r/ddemidov/vexcl)
+[<img src="http://codecov.io/github/ddemidov/vexcl/coverage.svg?branch=master" alt="Coverage Status" />](http://codecov.io/github/ddemidov/vexcl?branch=master)
 
 
 VexCL is a vector expression template library for OpenCL/CUDA. It has been